package test;

public class test02 {
        private static Object locker1 = new Object();
        private static Object locker2 = new Object();
        private static Object locker3 = new Object();

        public static void main(String[] args) throws InterruptedException {
            Thread t1 = new Thread(() -> {
                try {
                    for (int i = 0; i < 10; i++) {
                        synchronized (locker1) {
                            locker1.wait();
                        }
                        System.out.print("A");
                        synchronized (locker2) {
                            locker2.notify();
                        }
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            });

            Thread t2 = new Thread(() -> {
                try {
                    for (int i = 0; i < 10; i++) {
                        synchronized (locker2) {
                            locker2.wait();
                        }
                        System.out.print("B");
                        synchronized (locker3) {
                            locker3.notify();
                        }
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            });

            Thread t3 = new Thread(() -> {
                try {
                    for (int i = 0; i < 10; i++) {
                        synchronized (locker3) {
                            locker3.wait();
                        }
                        System.out.println("C");
                        synchronized (locker1) {
                            locker1.notify();
                        }
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            });
            t1.start();
            t2.start();
            t3.start();

            Thread.sleep(1000);

            // 从线程 t1 启动
            synchronized (locker1) {
                locker1.notify();
            }
        }
}

